St. Martin's Island (Bengali: সেন্ট মার্টিন্স দ্বীপ) is a small island (area only 3 km2) in the northeastern part of the Bay of Bengal, about 9 km south of the tip of the Cox's Bazar-Teknaf peninsula, and forming the southernmost part of Bangladesh. There is a small adjoining island that is separated at high tide, called Chera Dwip. It is about 8 kilometres (5 miles) west of the northwest coast

Tahirpur is an upazila of Sunamganj District in the division of Sylhet, Bangladesh.

Tanguar haor, located in the Dharmapasha and Tahirpur upazilas of Sunamganj District in Bangladesh, is a unique wetland ecosystem of national importance and has come into international focus. The area of Tanguar haor including 46 villages within the haor is about 100 square kilometres of which 2,802.36 ha² is wetland.

Sonargaon is a historic city in central Bangladesh. It is one of the old capitals of the historic region of Bengal and was an administrative center of eastern Bengal. It was also a port and trading center. During British colonial rule, merchants built many Indo-Saracenic townhouses in the Panam neighborhood. 

Teknaf is an Upazila of Cox's Bazar District in the Division of Chittagong, Bangladesh. It forms the southernmost point in mainland Bangladesh. The name of the region comes from the Naf River which forms the Eastern boundary of the upazila. It shares the border with Burma. 

St. Martin's Island is a small island in the northeastern part of the Bay of Bengal, about 9 km south of the tip of the Cox's Bazar-Teknaf peninsula, and forming the southernmost part of Bangladesh. There is a small adjoining island that is separated at high tide, called Chera Dwip.

Cox’s Bazar is a town on the southeast coast of Bangladesh. It’s known for its very long, sandy beachfront, stretching from Sea Beach in the north to Kolatoli Beach in the south. Aggameda Khyang monastery is home to bronze statues and centuries-old Buddhist manuscripts. South of town, the tropical rainforest of Himchari National Park has waterfalls and many birds. North, sea turtles breed on nearby Sonadia Island.

Kaptai is an Upazila of Rangamati District in the Division of Chittagong, Bangladesh. Notable landmarks are the Karnaphuli Hydroelectric Power Station, the only Hydro-electric power plant of Bangladesh.

Rangamati is the administrative headquarters of Rangamati Hill District in the Chittagong Hill Tracts of Bangladesh. It is also a capital city of Chittagong Hill Tracts. The town is located at 22°37'60N 92°12'0E and has an altitude of 14 metres.